C#中windows访问共享文件夹会用到的代码

定义：

public enum ERROR_ID
{
ERROR_SUCCESS = 0, // Success
ERROR_BUSY = 170,
ERROR_MORE_DATA = 234,
ERROR_NO_BROWSER_SERVERS_FOUND = 6118,
ERROR_INVALID_LEVEL = 124,
ERROR_ACCESS_DENIED = 5,
ERROR_INVALID_PASSWORD = 86,
ERROR_INVALID_PARAMETER = 87,
ERROR_BAD_DEV_TYPE = 66,
ERROR_NOT_ENOUGH_MEMORY = 8,
ERROR_NETWORK_BUSY = 54,
ERROR_BAD_NETPATH = 53,
ERROR_NO_NETWORK = 1222,
ERROR_INVALID_HANDLE_STATE = 1609,
ERROR_EXTENDED_ERROR = 1208,
ERROR_DEVICE_ALREADY_REMEMBERED = 1202,
ERROR_NO_NET_OR_BAD_PATH = 1203
}

public enum RESOURCE_SCOPE
{
RESOURCE_CONNECTED = 1,
RESOURCE_GLOBALNET = 2,
RESOURCE_REMEMBERED = 3,
RESOURCE_RECENT = 4,
RESOURCE_CONTEXT = 5
}

public enum RESOURCE_TYPE
{
RESOURCETYPE_ANY = 0,
RESOURCETYPE_DISK = 1,
RESOURCETYPE_PRINT = 2,
RESOURCETYPE_RESERVED = 8,
}

public enum RESOURCE_USAGE
{
RESOURCEUSAGE_CONNECTABLE = 1,
RESOURCEUSAGE_CONTAINER = 2,
RESOURCEUSAGE_NOLOCALDEVICE = 4,
RESOURCEUSAGE_SIBLING = 8,
RESOURCEUSAGE_ATTACHED = 16,
RESOURCEUSAGE_ALL = (RESOURCEUSAGE_CONNECTABLE | RESOURCEUSAGE_CONTAINER | RESOURCEUSAGE_ATTACHED),
}

public enum RESOURCE_DISPLAYTYPE
{
RESOURCEDISPLAYTYPE_GENERIC = 0,
RESOURCEDISPLAYTYPE_DOMAIN = 1,
RESOURCEDISPLAYTYPE_SERVER = 2,
RESOURCEDISPLAYTYPE_SHARE = 3,
RESOURCEDISPLAYTYPE_FILE = 4,
RESOURCEDISPLAYTYPE_GROUP = 5,
RESOURCEDISPLAYTYPE_NETWORK = 6,
RESOURCEDISPLAYTYPE_ROOT = 7,
RESOURCEDISPLAYTYPE_SHAREADMIN = 8,
RESOURCEDISPLAYTYPE_DIRECTORY = 9,
RESOURCEDISPLAYTYPE_TREE = 10,
RESOURCEDISPLAYTYPE_NDSCONTAINER = 11
}

[StructLayout(LayoutKind.Sequential)]
public struct NETRESOURCE
{
public RESOURCE_SCOPE dwScope;
public RESOURCE_TYPE dwType;
public RESOURCE_DISPLAYTYPE dwDisplayType;
public RESOURCE_USAGE dwUsage;

[MarshalAs(UnmanagedType.LPStr)]
public string lpLocalName;

[MarshalAs(UnmanagedType.LPStr)]
public string lpRemoteName;

[MarshalAs(UnmanagedType.LPStr)]
public string lpComment;

[MarshalAs(UnmanagedType.LPStr)]
public string lpProvider;
}

public class NetworkConnection
{

[DllImport("mpr.dll")]
public static extern int WNetAddConnection2A(NETRESOURCE[] lpNetResource, string lpPassword, string lpUserName, int dwFlags);

[DllImport("mpr.dll")]
public static extern int WNetCancelConnection2A(string sharename, int dwFlags, int fForce);

public static int Connect(string remotePath, string localPath, string username, string password)
{
NETRESOURCE[] share_driver = new NETRESOURCE[1];
share_driver[0].dwScope = RESOURCE_SCOPE.RESOURCE_GLOBALNET;
share_driver[0].dwType = RESOURCE_TYPE.RESOURCETYPE_DISK;
share_driver[0].dwDisplayType = RESOURCE_DISPLAYTYPE.RESOURCEDISPLAYTYPE_SHARE;
share_driver[0].dwUsage = RESOURCE_USAGE.RESOURCEUSAGE_CONNECTABLE;
share_driver[0].lpLocalName = localPath;
share_driver[0].lpRemoteName = remotePath;

Disconnect(localPath);
int ret = WNetAddConnection2A(share_driver, password, username, 1);

return ret;
}

public static int Disconnect(string localpath)
{
return WNetCancelConnection2A(localpath, 1, 1);
}
}

一般情况下，共享文件夹是不会用用户密码的

首先需要在cmd中注册，注册命令是：net use +共享文件夹服务器路径，代码实现这里就不贴代码了，园子里很多实现代码

删除：net use /delete * /yes

然后调用：  int status = NetworkConnection.Disconnect(@"\\172.21.45.97\IPC$");

如果返回0，则链接成功，此时就可以操作文件了

 var data = new DirectoryInfo(@"\\172.21.45.97\CreateTmp\").GetFileSystemInfos();

这是获取文件路径，如果共享是的盘符，则改为指定盘符则可

这里把上传、下载代码贴出来，实测有效

/// <summary>
/// 从远程服务器下载文件到本地
/// </summary>
/// <param name="src">下载到本地后的文件路径，包含文件的扩展名</param>
/// <param name="dst">远程服务器路径（共享文件夹路径）</param>
/// <param name="fileName">远程服务器（共享文件夹）中的文件名称，包含扩展名</param>
public static void TransportRemoteToLocal(string src, string dst, string fileName) //src：下载到本地后的文件路径 dst：远程服务器路径 fileName:远程服务器dst路径下的文件名
{
if (!Directory.Exists(dst))
{
Directory.CreateDirectory(dst);
}
dst = dst + fileName;
FileStream inFileStream = new FileStream(dst, FileMode.Open); //远程服务器文件 此处假定远程服务器共享文件夹下确实包含本文件，否则程序报错

FileStream outFileStream = new FileStream(src, FileMode.OpenOrCreate); //从远程服务器下载到本地的文件

byte[] buf = new byte[inFileStream.Length];

int byteCount;

while ((byteCount = inFileStream.Read(buf, 0, buf.Length)) > 0)
{

outFileStream.Write(buf, 0, byteCount);

}

inFileStream.Flush();

inFileStream.Close();

outFileStream.Flush();

outFileStream.Close();

}

/// <summary>
/// 将本地文件上传到远程服务器共享目录
/// </summary>
/// <param name="src">本地文件的绝对路径，包含扩展名</param>
/// <param name="dst">远程服务器共享文件路径，不包含文件扩展名</param>
/// <param name="fileName">上传到远程服务器后的文件扩展名</param>
public static void TransportLocalToRemote(string src, string dst, string fileName) //src
{
FileStream inFileStream = new FileStream(src, FileMode.Open); //此处假定本地文件存在，不然程序会报错

if (!Directory.Exists(dst)) //判断上传到的远程服务器路径是否存在
{
Directory.CreateDirectory(dst);
}
dst = dst + fileName; //上传到远程服务器共享文件夹后文件的绝对路径

FileStream outFileStream = new FileStream(dst, FileMode.OpenOrCreate);

byte[] buf = new byte[inFileStream.Length];

int byteCount;

while ((byteCount = inFileStream.Read(buf, 0, buf.Length)) > 0)
{

outFileStream.Write(buf, 0, byteCount);

}

inFileStream.Flush();

inFileStream.Close();

outFileStream.Flush();

outFileStream.Close();
}

TransportRemoteToLocal(@"D:\\Models\\个人介绍.pptx", @"\\192.168.1.1\Tep\", "个人介绍.pptx");

这是下载，上传就不贴调用了，根据方法调用即可。

申明：本代码是在园子中搜索采集的，不是本人原创。如果有版权问题，请联系本人删除该随笔，谢谢！